./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:52:22,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:52:22,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:52:22,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:52:22,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:52:22,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:52:22,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:52:22,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:52:22,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:52:22,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:52:22,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:52:22,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:52:22,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:52:22,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:52:22,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:52:22,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:52:22,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:52:22,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:52:22,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:52:22,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:52:22,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:52:22,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:52:22,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:52:22,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:52:22,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:52:22,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:52:22,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:52:22,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:52:22,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:52:22,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:52:22,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:52:22,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:52:22,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:52:22,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:52:22,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:52:22,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:52:22,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:52:22,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:52:22,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:52:22,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:52:22,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:52:22,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:52:22,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:52:22,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:52:22,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:52:22,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:52:22,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:52:22,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:52:22,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:52:22,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:52:22,242 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:52:22,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:52:22,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:52:22,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:52:22,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:52:22,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:52:22,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:52:22,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:52:22,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:52:22,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:52:22,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:52:22,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:52:22,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:52:22,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:52:22,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:52:22,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:52:22,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:52:22,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:52:22,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:52:22,247 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:52:22,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:52:22,247 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:52:22,247 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2022-12-13 18:52:22,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:52:22,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:52:22,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:52:22,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:52:22,430 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:52:22,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:52:25,046 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:52:25,162 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:52:25,162 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:52:25,167 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/data/ed644de2f/ab741136b58941189382926902db36e2/FLAGa08b45030 [2022-12-13 18:52:25,180 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/data/ed644de2f/ab741136b58941189382926902db36e2 [2022-12-13 18:52:25,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:52:25,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:52:25,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:52:25,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:52:25,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:52:25,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679dc787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25, skipping insertion in model container [2022-12-13 18:52:25,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:52:25,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:52:25,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-12-13 18:52:25,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:52:25,367 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:52:25,378 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-12-13 18:52:25,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:52:25,405 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:52:25,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25 WrapperNode [2022-12-13 18:52:25,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:52:25,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:52:25,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:52:25,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:52:25,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,440 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158 [2022-12-13 18:52:25,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:52:25,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:52:25,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:52:25,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:52:25,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:52:25,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:52:25,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:52:25,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:52:25,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (1/1) ... [2022-12-13 18:52:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:52:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:52:25,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:52:25,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:52:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:52:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 18:52:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 18:52:25,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:52:25,594 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:52:25,595 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:52:25,765 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:52:25,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:52:25,770 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:52:25,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:52:25 BoogieIcfgContainer [2022-12-13 18:52:25,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:52:25,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:52:25,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:52:25,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:52:25,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:52:25" (1/3) ... [2022-12-13 18:52:25,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d03a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:52:25, skipping insertion in model container [2022-12-13 18:52:25,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:52:25" (2/3) ... [2022-12-13 18:52:25,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d03a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:52:25, skipping insertion in model container [2022-12-13 18:52:25,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:52:25" (3/3) ... [2022-12-13 18:52:25,780 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:52:25,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:52:25,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:52:25,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:52:25,843 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2196f6d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:52:25,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:52:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:52:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 18:52:25,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:25,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:25,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times [2022-12-13 18:52:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:25,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675068899] [2022-12-13 18:52:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:52:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675068899] [2022-12-13 18:52:26,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675068899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:52:26,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:52:26,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:52:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417187822] [2022-12-13 18:52:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:52:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:52:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:52:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:52:26,066 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:26,146 INFO L93 Difference]: Finished difference Result 131 states and 207 transitions. [2022-12-13 18:52:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:52:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 18:52:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:26,155 INFO L225 Difference]: With dead ends: 131 [2022-12-13 18:52:26,155 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 18:52:26,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:52:26,160 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:26,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 92 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:52:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 18:52:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 45. [2022-12-13 18:52:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:52:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2022-12-13 18:52:26,190 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10 [2022-12-13 18:52:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:26,190 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2022-12-13 18:52:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2022-12-13 18:52:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 18:52:26,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:26,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:26,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:52:26,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times [2022-12-13 18:52:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:26,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252094113] [2022-12-13 18:52:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:52:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252094113] [2022-12-13 18:52:26,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252094113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:52:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408916785] [2022-12-13 18:52:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:52:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:52:26,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:52:26,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:52:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:26,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:52:26,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:52:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:52:26,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:52:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:52:26,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408916785] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:52:26,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:52:26,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 18:52:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112639372] [2022-12-13 18:52:26,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:52:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:52:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:52:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:52:26,370 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:26,500 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2022-12-13 18:52:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:52:26,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 18:52:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:26,503 INFO L225 Difference]: With dead ends: 223 [2022-12-13 18:52:26,503 INFO L226 Difference]: Without dead ends: 183 [2022-12-13 18:52:26,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:52:26,505 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 142 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:26,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 263 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:52:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-13 18:52:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 51. [2022-12-13 18:52:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:52:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-12-13 18:52:26,516 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12 [2022-12-13 18:52:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:26,516 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-12-13 18:52:26,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-12-13 18:52:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 18:52:26,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:26,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:26,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:52:26,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:52:26,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times [2022-12-13 18:52:26,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:26,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713588107] [2022-12-13 18:52:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:52:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713588107] [2022-12-13 18:52:26,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713588107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:52:26,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:52:26,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:52:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103043612] [2022-12-13 18:52:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:52:26,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:52:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:52:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:52:26,830 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:26,870 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2022-12-13 18:52:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:52:26,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 18:52:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:26,871 INFO L225 Difference]: With dead ends: 98 [2022-12-13 18:52:26,871 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 18:52:26,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:52:26,872 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:26,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:52:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 18:52:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-12-13 18:52:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:52:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-12-13 18:52:26,877 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18 [2022-12-13 18:52:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:26,878 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-12-13 18:52:26,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-12-13 18:52:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 18:52:26,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:26,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:26,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:52:26,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times [2022-12-13 18:52:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:26,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739116000] [2022-12-13 18:52:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:26,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:52:26,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:26,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739116000] [2022-12-13 18:52:26,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739116000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:52:26,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:52:26,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:52:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872842350] [2022-12-13 18:52:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:52:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:52:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:52:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:52:26,932 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:26,949 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2022-12-13 18:52:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:52:26,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 18:52:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:26,951 INFO L225 Difference]: With dead ends: 117 [2022-12-13 18:52:26,951 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 18:52:26,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:52:26,952 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:26,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:52:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 18:52:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2022-12-13 18:52:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:52:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-12-13 18:52:26,958 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2022-12-13 18:52:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:26,958 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-12-13 18:52:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-12-13 18:52:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 18:52:26,959 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:26,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:52:26,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times [2022-12-13 18:52:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:26,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759232128] [2022-12-13 18:52:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:52:27,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759232128] [2022-12-13 18:52:27,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759232128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:52:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463136199] [2022-12-13 18:52:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:27,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:52:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:52:27,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:52:27,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:52:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:27,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:52:27,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:52:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:52:27,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:52:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:52:27,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463136199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:52:27,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:52:27,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 18:52:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970771015] [2022-12-13 18:52:27,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:52:27,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:52:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:52:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:52:27,178 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:27,759 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions. [2022-12-13 18:52:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 18:52:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 18:52:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:27,761 INFO L225 Difference]: With dead ends: 623 [2022-12-13 18:52:27,762 INFO L226 Difference]: Without dead ends: 577 [2022-12-13 18:52:27,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:52:27,763 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1188 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:27,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 428 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:52:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-12-13 18:52:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 88. [2022-12-13 18:52:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:52:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2022-12-13 18:52:27,778 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31 [2022-12-13 18:52:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:27,779 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2022-12-13 18:52:27,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2022-12-13 18:52:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 18:52:27,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:27,780 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:27,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:52:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:52:27,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times [2022-12-13 18:52:27,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:27,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717343185] [2022-12-13 18:52:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 18:52:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:28,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717343185] [2022-12-13 18:52:28,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717343185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:52:28,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:52:28,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:52:28,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330309020] [2022-12-13 18:52:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:52:28,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:52:28,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:52:28,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:52:28,173 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:28,190 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions. [2022-12-13 18:52:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:52:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 18:52:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:28,192 INFO L225 Difference]: With dead ends: 153 [2022-12-13 18:52:28,192 INFO L226 Difference]: Without dead ends: 114 [2022-12-13 18:52:28,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:52:28,192 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:28,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 177 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:52:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-13 18:52:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2022-12-13 18:52:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:52:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-12-13 18:52:28,201 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2022-12-13 18:52:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:28,201 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-12-13 18:52:28,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-12-13 18:52:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 18:52:28,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:52:28,203 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:52:28,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:52:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:52:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times [2022-12-13 18:52:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:52:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309041636] [2022-12-13 18:52:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:52:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 18:52:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309041636] [2022-12-13 18:52:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309041636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:52:28,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:52:28,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:52:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633905552] [2022-12-13 18:52:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:52:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:52:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:52:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:52:28,301 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:28,313 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2022-12-13 18:52:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:52:28,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 18:52:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:28,314 INFO L225 Difference]: With dead ends: 100 [2022-12-13 18:52:28,314 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:52:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:52:28,315 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:52:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:52:28,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:52:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:52:28,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2022-12-13 18:52:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:28,316 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:52:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:52:28,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:52:28,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 18:52:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:52:28,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 18:52:28,457 INFO L895 garLoopResultBuilder]: At program point insert_returnLabel#1(lines 16 19) the Hoare annotation is: false [2022-12-13 18:52:28,458 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2022-12-13 18:52:28,458 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2022-12-13 18:52:28,458 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 27 67) the Hoare annotation is: true [2022-12-13 18:52:28,458 INFO L895 garLoopResultBuilder]: At program point elem_exists_returnLabel#1(lines 20 26) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= 0 |ULTIMATE.start_elem_exists_#res#1|) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,458 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 18:52:28,458 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2022-12-13 18:52:28,458 INFO L895 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L895 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L895 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2022-12-13 18:52:28,459 INFO L895 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,460 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2022-12-13 18:52:28,460 INFO L895 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2022-12-13 18:52:28,460 INFO L895 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2022-12-13 18:52:28,460 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L895 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L899 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2022-12-13 18:52:28,461 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0) [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L895 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| 0))) (or (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) .cse0 .cse1) (and .cse0 (= |ULTIMATE.start_main_~v~0#1| 0) .cse1))) [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-12-13 18:52:28,462 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2022-12-13 18:52:28,462 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-12-13 18:52:28,466 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-12-13 18:52:28,468 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:52:28,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:52:28 BoogieIcfgContainer [2022-12-13 18:52:28,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:52:28,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:52:28,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:52:28,480 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:52:28,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:52:25" (3/4) ... [2022-12-13 18:52:28,483 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:52:28,488 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 18:52:28,491 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 18:52:28,491 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-13 18:52:28,491 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:52:28,491 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:52:28,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 [2022-12-13 18:52:28,518 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:52:28,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:52:28,518 INFO L158 Benchmark]: Toolchain (without parser) took 3334.96ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 76.6MB in the beginning and 81.2MB in the end (delta: -4.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,518 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:52:28,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.86ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 65.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.31ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 63.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,519 INFO L158 Benchmark]: Boogie Preprocessor took 26.26ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 61.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,519 INFO L158 Benchmark]: RCFGBuilder took 303.65ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 47.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,519 INFO L158 Benchmark]: TraceAbstraction took 2705.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 46.9MB in the beginning and 84.3MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:52:28,520 INFO L158 Benchmark]: Witness Printer took 37.72ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:52:28,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.86ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 65.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.31ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 63.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.26ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 61.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 303.65ms. Allocated memory is still 117.4MB. Free memory was 61.9MB in the beginning and 47.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2705.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 46.9MB in the beginning and 84.3MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.72ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1484 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1444 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 799 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 368 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 699 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 35 PreInvPairs, 58 NumberOfFragments, 99 HoareAnnotationTreeSize, 35 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 438 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && n == 0) && x == 0) || ((n == 0 && v == 0) && x == 0) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-12-13 18:52:28,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e906ed2a-8530-427c-aa40-adb14d282790/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE